单项选择题

基础知识,章节练习,土木工程师（水利水电）现代技术基础,电气技术基础

A.
B.
C.
D.
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单项选择题
Limber is a term associated with ______．A.Emergency gearB.DrainageC.Deck cargo storageD.Securing gear
A.A.Emergency
B.Drainage
C.Deck
C.Securing
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On a vessel，the keel is the primary strength member of the lower hull form in which direction ________．A.TransverseB.DiagonalC.LongitudinalD.Vertical
A.A.Transverse
B.Diagonal
C.Longitudinal
D.Vertical
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